numerical relativity

(NR)

(solving GR-sensitive problems with numerical methods)

The term numerical relativity (NR) is used for mathematically
modeling general relativity-sensitive scenarios using numerical methods,
inevitably requiring computers to carry out.
Numerical methods can solve problems involving equations
for which no one has found analytical solutions (e.g., if they don't exist),
and general relativity problems often have such equations.
As such, numerical relativity can be considered
one type of computational astrophysics.
Example scenarios include close interactions, such as mergers
between compact objects, i.e., involving strong-field gravity.